The principle of fiber optics are based on transmission of data by means of
light. Fiber optics emerged and grew into more advanced phase due to requirement
from radio and telephone engineers. These engineers required more bandwidth for
data transmission. Therefor these engineers had been looking out for a medium to
transmit data in more reliable and faster form rather than copper
cables.
Fiber optics had attracted some attention because they were analogous
in theory to plastic dielectric waveguides used in certain microwave
applications. Finally a technology evolved that used glass or plastic threads to
transmit data. Cables involved in fiber optics contain several bundles of glass
threads which are capable of transmitting data in modulated form.
With the
start of fiber optics and Fiber
Optic Cables data started to transfer faster as fiber optic cables have
greater bandwidth than metal cables and are more resistive to external
interference. Lighter and thinner fiber optic cables readily transfer data in
digital form rather than analogue form. This technology is most useful in
computer industry which now forms an integral part of telephone, our mission is
to save shoppers time, money by bringing together everything that's
needed to buy a fiber optic splitter radio and television industry.
Fiber
optics yield distortion free data transmission in digital form. The audio waves
transmitted via principle of fiber optics deliver accurate signal transfer.
Fiber optics is also useful in automotive and transportation industry. Traffic
lights, the new MIPP is a termination Patch panel
that need to be connected to active equipment. organized and scrutinized highway
traffic control, explains what is a optical fiber pigtail, fiber pigtail color
codes are some of the benefits of application of fiber opticons in the
transportation mechanism.
The use of lasers in fiber optics is an important
milestone in the technical field. Because of their capability for higher
modulation frequency, lasers were identified as an important means of carrying
information. In fiber optic technology, transmitters comprise lasers and
modulators. Lasers help to inject a signal into the fiber. Lasers create the
light and the modulator changes the power of the laser light to combine the data
to be transmitted.
Related:
http://sopto.wordpress.com/2013/04/22/the-standard-of-fiber-optic-transceivers/
2013年4月22日星期一
The type of fiber optic patch cable interface and scope of application
Fiber optic patch cable categorized and summarized as follows:
Fiber patch cable is access to the optical module fiber optic connection, have a good variety, and may not be interoperable. SFP module with LC fiber optic patch cable, the GBIC module connected SC fiber optic patch cable. The following detailed description of several commonly used in network engineering fiber optic connection:
① FC fiber optic patch cable: External strengthen the use of metal fastening method for the turnbuckle. Generally used in the ODF side up (Patch panel)
② The SC fiber optic patch cable: connector to connect the GBIC optical modules, and its shell is rectangular fastening method is the use of plug pin latch type, do not need to rotate. (Routers, switches, the most widely used)
③ ST fiber optic patch cable: commonly used in fiber optic patch panel, shell round in shape, fastening methods for the turnbuckle. (For 10Base-F connections, the connectors are usually ST type commonly used in fiber optic patch panel)
④ The LC fiber optic patch cable: connected to the SFP module connector, it uses that the easy to operate modular jack (RJ) latch mechanism is made. (Commonly used in routers)
⑤ MT-RJ fiber optic patch cable: send and receive one of the square fiber optic connectors, one dual fiber transceiver
ST, SC connectors connector commonly used in general network. ST inserted after rotating a half weeks of a fixed bayonet, the drawback is easily broken; SC connector plug directly, very easy to use, the drawback is easy to fall out; FC connectors general telecommunications network using a nut screwed onto the adapter. The advantage is solid, anti-dust, the drawback is that the installation a little longer. MTRJ type fiber optic jumper by two high-precision plastic molded connectors and fiber optic cable. Outside of the connector is a precision plastic parts, including the tight organization of the push-pull plug card. For indoor applications in the telecommunications and data network systems.
Fiber modules: general are hot-swappable-GBIC fiber-optic interface and more to SC or ST type; SFP: small packa GE GBIC, fiber optic LC type.
Use of fiber:
Single-mode: L 1310 Single-mode long distance LH wavelengths 1310, 1550
Multimode: SM wavelength 850
SX / LH can use single-mode or multimode fiber
Said pigtail connector marked, we can often see FC / PC,SC / PC etc., its meaning is as follows
in front of part of said pigtail connector models
connector is the standard rectangular connector, engineering plastics, high temperature, not easily oxidized advantages. Transmission equipment sidelight interface generally with SC connector
LC connectors with SC connectors are similar in shape, smaller than the SC connector.
FC connector is a metal connector, usually used in the ODF side, pluggable metal joints more often than plastic.
More varieties signal connector, in addition to the three described above, as well as MTRJ, ST, MU,
behind the cross-section technology that fiber optic connectors, ie, polishing
PC in the equipment of telecom operators is the most widely used, the joint cross-section is flat.
UPC attenuation is smaller than the PC generally used for devices with special needs, some foreign manufacturers ODF frame internal jump fiber with the FC / UPC, mainly to improve the indicators of the ODF device itself.
In addition, it is used more often in the CATV broadcasting and early model of APC Pigtail head with the inclination of the face, can improve the quality of television signals, mainly due to the TV signal is analog optical modulation, when the connector coupling The surface is perpendicular to the reflected light returns along the original path.
The fiber refractive index profile of uneven will again return to the coupling surface, although the energy is very small but because of the analog signal can not completely eliminate the noise, so the equivalent of a clear signal superimposed on a weak signal with a delay performance is ghosting on the screen. Pigtailed headband angle allows the reflected light returns along the original path. General digital signal there is generally no problem.
Use:
A: optical fiber communication systems
B: fiber-optic broadband access network
C: fiber optic CATV
D: local area network LAN
E: fiber-optic instrument table
F: fiber optic sensors
G: fiber-optic data transmission system
H: Test Equipment
Related:
http://zerolang.urbanblog.dk/2013/04/22/the-fiber-optic-story/
Fiber patch cable is access to the optical module fiber optic connection, have a good variety, and may not be interoperable. SFP module with LC fiber optic patch cable, the GBIC module connected SC fiber optic patch cable. The following detailed description of several commonly used in network engineering fiber optic connection:
① FC fiber optic patch cable: External strengthen the use of metal fastening method for the turnbuckle. Generally used in the ODF side up (Patch panel)
② The SC fiber optic patch cable: connector to connect the GBIC optical modules, and its shell is rectangular fastening method is the use of plug pin latch type, do not need to rotate. (Routers, switches, the most widely used)
③ ST fiber optic patch cable: commonly used in fiber optic patch panel, shell round in shape, fastening methods for the turnbuckle. (For 10Base-F connections, the connectors are usually ST type commonly used in fiber optic patch panel)
④ The LC fiber optic patch cable: connected to the SFP module connector, it uses that the easy to operate modular jack (RJ) latch mechanism is made. (Commonly used in routers)
⑤ MT-RJ fiber optic patch cable: send and receive one of the square fiber optic connectors, one dual fiber transceiver
ST, SC connectors connector commonly used in general network. ST inserted after rotating a half weeks of a fixed bayonet, the drawback is easily broken; SC connector plug directly, very easy to use, the drawback is easy to fall out; FC connectors general telecommunications network using a nut screwed onto the adapter. The advantage is solid, anti-dust, the drawback is that the installation a little longer. MTRJ type fiber optic jumper by two high-precision plastic molded connectors and fiber optic cable. Outside of the connector is a precision plastic parts, including the tight organization of the push-pull plug card. For indoor applications in the telecommunications and data network systems.
Fiber modules: general are hot-swappable-GBIC fiber-optic interface and more to SC or ST type; SFP: small packa GE GBIC, fiber optic LC type.
Use of fiber:
Single-mode: L 1310 Single-mode long distance LH wavelengths 1310, 1550
Multimode: SM wavelength 850
SX / LH can use single-mode or multimode fiber
Said pigtail connector marked, we can often see FC / PC,SC / PC etc., its meaning is as follows
in front of part of said pigtail connector models
connector is the standard rectangular connector, engineering plastics, high temperature, not easily oxidized advantages. Transmission equipment sidelight interface generally with SC connector
LC connectors with SC connectors are similar in shape, smaller than the SC connector.
FC connector is a metal connector, usually used in the ODF side, pluggable metal joints more often than plastic.
More varieties signal connector, in addition to the three described above, as well as MTRJ, ST, MU,
behind the cross-section technology that fiber optic connectors, ie, polishing
PC in the equipment of telecom operators is the most widely used, the joint cross-section is flat.
UPC attenuation is smaller than the PC generally used for devices with special needs, some foreign manufacturers ODF frame internal jump fiber with the FC / UPC, mainly to improve the indicators of the ODF device itself.
In addition, it is used more often in the CATV broadcasting and early model of APC Pigtail head with the inclination of the face, can improve the quality of television signals, mainly due to the TV signal is analog optical modulation, when the connector coupling The surface is perpendicular to the reflected light returns along the original path.
The fiber refractive index profile of uneven will again return to the coupling surface, although the energy is very small but because of the analog signal can not completely eliminate the noise, so the equivalent of a clear signal superimposed on a weak signal with a delay performance is ghosting on the screen. Pigtailed headband angle allows the reflected light returns along the original path. General digital signal there is generally no problem.
Use:
A: optical fiber communication systems
B: fiber-optic broadband access network
C: fiber optic CATV
D: local area network LAN
E: fiber-optic instrument table
F: fiber optic sensors
G: fiber-optic data transmission system
H: Test Equipment
Related:
http://zerolang.urbanblog.dk/2013/04/22/the-fiber-optic-story/
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